agonist

汉语翻译

n. 主动肌, 促效药, 显效药, 主缩肌
【化】 兴奋剂; 激动剂
【医】 主动肌, 主缩肌(与拮抗肌对立); 显效药, 促效药(与拮抗药对立)

英语解释：

名词 agonist:

1. the principal character in a work of fiction
   同义词：protagonist
2. someone involved in a contest or battle (as in an agon)
3. a muscle that contracts while another relaxes
4. (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction